Journal ArticleDOI
Large-scale pattern growth of graphene films for stretchable transparent electrodes
Keun Soo Kim,Yue Zhao,Houk Jang,Sang Yoon Lee,Jong Min Kim,Kwang S. Kim,Jong Hyun Ahn,Philip Kim,Philip Kim,Jae-Young Choi,Byung Hee Hong +10 more
Reads0
Chats0
TLDR
The direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers is reported, and two different methods of patterning the films and transferring them to arbitrary substrates are presented, implying that the quality of graphene grown by chemical vapours is as high as mechanically cleaved graphene.Abstract:
Problems associated with large-scale pattern growth of graphene constitute one of the main obstacles to using this material in device applications. Recently, macroscopic-scale graphene films were prepared by two-dimensional assembly of graphene sheets chemically derived from graphite crystals and graphene oxides. However, the sheet resistance of these films was found to be much larger than theoretically expected values. Here we report the direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers, and present two different methods of patterning the films and transferring them to arbitrary substrates. The transferred graphene films show very low sheet resistance of approximately 280 Omega per square, with approximately 80 per cent optical transparency. At low temperatures, the monolayers transferred to silicon dioxide substrates show electron mobility greater than 3,700 cm(2) V(-1) s(-1) and exhibit the half-integer quantum Hall effect, implying that the quality of graphene grown by chemical vapour deposition is as high as mechanically cleaved graphene. Employing the outstanding mechanical properties of graphene, we also demonstrate the macroscopic use of these highly conducting and transparent electrodes in flexible, stretchable, foldable electronics.read more
Citations
More filters
Journal ArticleDOI
Novel effects of strains in graphene and other two dimensional materials
B. Amorim,B. Amorim,Alberto Cortijo,F. de Juan,F. de Juan,Adolfo G. Grushin,Francisco Guinea,Francisco Guinea,Francisco Guinea,A. Gutierrez-Rubio,Hector Ochoa,Hector Ochoa,Vincenzo Parente,Vincenzo Parente,Rafael Roldán,Pablo San-Jose,Jürgen Schiefele,Mauricio Sturla,María A. H. Vozmediano +18 more
TL;DR: In this paper, the role of strains in the structural and electronic properties of graphene and other two-dimensional compounds is discussed. But, the influence of strains on these properties was not considered before, such as electronic transport, spin-orbit coupling, the formation of Moire patterns and optics.
Journal ArticleDOI
“Secondary doping” methods to significantly enhance the conductivity of PEDOT:PSS for its application as transparent electrode of optoelectronic devices
TL;DR: It has been discovered that the conductivity of as-prepared PEDot:PSS from its aqueous solution can be significantly enhanced by adding organic compounds like high-boiling point polar organic solvents, ionic liquids and surfactants or through a post-treatment of PEDOT: PSS films with organic compounds.
Journal ArticleDOI
Ultra-thin high efficiency semitransparent perovskite solar cells
Enrico Della Gaspera,Yong Peng,Qicheng Hou,Leone Spiccia,Udo Bach,Udo Bach,Udo Bach,Jacek J. Jasieniak,Yi-Bing Cheng +8 more
TL;DR: In this article, an efficient perovskite solar cells with high transparency in the visible spectrum have been developed, which include a dielectric metal-dielectric multilayered top electrode and an optimized solution-based thin and continuous methylammonium lead iodide film.
Journal ArticleDOI
Synthesis and characterization of graphene and carbon nanotubes: A review on the past and recent developments
TL;DR: A review of the past and current advancement of synthesis and characterization of graphene and carbon nanotubes can be found in this article, where a brief summary and an outlook on the challenges and future prospects in the growth of Graphene and CNTs are discussed.
Journal ArticleDOI
Transparent Electrodes for Efficient Optoelectronics
Monica Morales-Masis,Stefaan De Wolf,Rachel Woods-Robinson,Joel W. Ager,Joel W. Ager,Christophe Ballif +5 more
TL;DR: The most relevant transparent electrodes developed to date are introduced, their fundamental properties are described, and their materials are classified according to specific application requirements in high efficiency solar cells and flexible organic light-emitting diodes (OLEDs).
References
More filters
Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
Journal ArticleDOI
The rise of graphene
TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
Journal ArticleDOI
Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.